/**
 * Copyright 2013-2022 the original author or authors from the Jeddict project (https://jeddict.github.io/).
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package io.github.jeddict.jpa.spec.validator;

import io.github.jeddict.util.StringUtils;
import io.github.jeddict.jpa.spec.SequenceGenerator;

/**
 *
 * @author Gaurav Gupta
 */
public class SequenceGeneratorValidator  extends MarshalValidator<SequenceGenerator> {

    @Override
    public SequenceGenerator marshal(SequenceGenerator sequenceGenerator) throws Exception {
        if (sequenceGenerator != null && isEmpty(sequenceGenerator)) {
            return null;
        }
        return sequenceGenerator;
    }
    
    public static boolean isEmpty(SequenceGenerator seq) {
        return StringUtils.isBlank(seq.getName()) && StringUtils.isBlank(seq.getCatalog()) && StringUtils.isBlank(seq.getSchema())
                && StringUtils.isBlank(seq.getSequenceName()) 
                && (seq.getAllocationSize()==null || seq.getAllocationSize()== 50)
                && (seq.getInitialValue()==null || seq.getInitialValue() == 1);
    }

}
